(1) Ships shall have a forecastle of at least
standard height and a length of at least 0.07 L. In addition, if the
ship is less than 100 metres (328 feet) in length, a poop of at least
standard height, or a raised quarter deck with either a deckhouse
or a strong steel hood of at least the same total height shall be
fitted aft.
(2) Double bottom tanks where fitted within the
midship half length of the ship shall have adequate watertight longitudinal
subdivision.
(3) The ship shall be fitted either with permanent
bulwarks at least 1 metre (39½ inches) in height, specially
stiffened on the upper edge and supported by strong bulwark stays
attached to the deck and provided with necessary freeing ports, or
with efficient rails of the same height and of specially strong construction.